More info about how the NGSS were developed. Khan Academy's NGSS courses have been designed to support the DCI dimension of the standards. Our newer non-AP courses (as well as our new middle school science courses) are designed as a strategic classroom supplement to support the latest standards: the Next Generation Science Standards (NGSS).Ī set of research-based, up-to-date K–12 science standards, the NGSS were developed around the principle that there are three distinct and equally important dimensions to learning science: disciplinary core ideas (DCI), practices (application of core ideas to real world contexts), and cross-cutting concepts (like patterns, cause and effect, and structure and function). Some background: our AP courses are aligned to the most recent test specifications, and our biology and physics courses are aligned to NGSS. We're not finished with them quite yet! Over the 2022-2023 school year, we'll be making some updates in response to feedback we've received from our teachers and learners. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month.In Summer 2021, we published five new high school science courses: We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. View more lessons or practice this subject at The reaction quotient, Q, has the same form as K but describes the relative amounts of reaction species at any point in time. The expression for K is equal to the concentrations (or partial pressures) of the products raised to their stoichiometric coefficients divided by the concentrations (or partial pressures) of the reactants raised to their stoichiometric coefficients. The equilibrium constant, K, describes the relative amounts of reaction species at equilibrium.
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